{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3S-AR66","brand":"Omron","brandSlug":"omron","productSlug":"E3S-AR66","canonicalUrl":"https://aoctrl.com/omron/E3S-AR66","factsUrl":"https://aoctrl.com/api/mcp/products/E3S-AR66","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3S-A Series, Retroreflective Photoelectric Sensor, E3S-AR66, 2m Range, NPN Dark-ON/Light-ON Selectable, IP67, 10-30 VDC.","salesMarkdown":"## Sensor at a glance The Omron E3S-AR66 from the E3S-A series is a retroreflective sensor giving you a 2m sensing distance down a conveyor zone. Output is NPN, selectable between dark-on and light-on via a two-turn endless adjuster with an indicator — handy when you need to flip logic without rewiring. The 500µs response time keeps up with typical accumulation speeds, and the NEMA 4X / IP67 enclosure lets you mount it on washdown zones without extra protection. Supply is 10–30 VDC. ## Mounting and setup notes The sensor uses a connector — no pigtail — so you'll need a mating cable with the matching pinout. The two-turn adjuster with a pointer indicator simplifies alignment: set the reflector, run the adjuster until the indicator shows a clean switch. Dark-on mode works well for presence detection (block beam = output on), light-on for missing-object or edge sensing.","metaTitle":"Omron E3S-AR66 Retroreflective Sensor, 2m, NPN","metaDescription":"Omron E3S-AR66 retroreflective photoelectric sensor, 2m sensing range, NPN output, IP67, 10-30 VDC. Current production. Source via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"title":"E3S-AR66","Series":"E3S-A","Packaging":"Bulk","description":"SENSOR RETROREFLCTV 2M NPN DO/LO","Light Source":"Red (700nm)","Response Time":"500µs","Sensing Method":"Retroreflective","Adjustment Type":"Two-Turn Endless Adjuster with an Indicator","lifecycle_stage":"current","Sensing Distance":"78.740\" (2m)","Voltage - Supply":"10V ~ 30V","Connection Method":"Connector","Ingress Protection":"NEMA 4X; IEC IP67","Output Configuration":"NPN - Dark-ON/Light-ON - Selectable","Operating Temperature":"-25°C ~ 55°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$116.84","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1206c0e95ed4de08a10c2a56d560b668.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the E3S-AR66 drop into a panel wired for the E3S-AR86?","answer":"Mechanically and optically yes — same housing, lens, and 2m range. The only difference is output configuration: E3S-AR66 is NPN (sinking), E3S-AR86 is PNP (sourcing). If your PLC inputs are sinking, the AR66 works; if sourcing, use the AR86."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3S-AR66","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/E3S-AR66 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}